Williams Partners LP registered $1 billion worth of common units to sell from time to time with prices and terms that would depend on market conditions.

Williams Partners plans to use the proceeds from any sale of the common units for general partnership purposes, such as debt repayment, working capital, CapEx or acquisitions, according to a shelf registration filed Feb. 22.

The Oklahoma-based Williams Partners operates energy infrastructure assets, including gas pipelines and other midstream assets for natural gas and NGLs.